drm/i915: Add non claimed mmio checking for vlv/chv

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Imre mentioned that chv might also have capability to
track unclaimed mmio accesses. Ville added that
both chv and vlv has this capability and he had already
made this way back [1]. Mimic what Ville's patch does
but adapt on top of less frequent mmio accesses by
omitting checking always on reg writes.

This patch is untested as of now.

v2: overflow handling and posting omitted (Ville)

References: [1] http://lists.freedesktop.org/archives/intel-gfx/2013-May/027599.html
Cc: Imre Deak <imre.deak@intel.com>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1450201542-22918-1-git-send-email-mika.kuoppala@intel.com

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This commit is contained in:

Mika Kuoppala 2015-12-15 19:45:42 +02:00 • committed by Mika Kuoppala

parent 4bd0a25d9b

commit 8ac3e1bb76

2 changed files with 32 additions and 4 deletions

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5

drivers/gpu/drm/i915/i915_reg.h

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31

drivers/gpu/drm/i915/intel_uncore.c

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